Geronimo Stilton, The Great journey

At the office new M letter

In that part on my office a new letter

Appeared.

I read it and it said

Ok I'll continue

Then the first on the left, cross the bridge take twenty-three and a half step until you reach the billboard

With the gogorzola cheese ad. Then dake fourteen step toward the telephone booth. You should find yourself standing in a front of a clock.

Turn your back